Journal
TRENDS IN PLANT SCIENCE
Volume 14, Issue 4, Pages 194-199Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2009.01.005
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Funding
- Deutsche Forschungsgerneinschaft (DFG) [KH1350/9]
- Norwegian Research Foundation [180662N40]
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In plants, increasing evidence points towards the existence of nuclear proteins that are also targeted to either mitochondria - a well-known phenomenon from yeast and mammalians - or to plastids. One such protein is Whirly1, which was the first protein to be identified in the nucleus and plastids of the same plant cell. Like Whirly1, most of the dual targeted (nucleus and organelle) proteins have functions in the maintenance of DNA, telomere structuring or gene expression. In some instances, proteins were even shown to be relocated from one compartment to another upon environmental or developmental clues. We hypothesize that one rationale of dual targeting is storage or sequestration of these proteins inside the organelles until specific conditions require their activity in the nucleus.
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